Issue #2762173 by megansanicki, artinst4, YesCT, mradcliffe, a_thakur, vermauv, cilefen, mathieso, pwolanin, mlhess: Add "composer install" step to install.txt file for when Drupal is downloaded using git

(cherry picked from commit 4dcb2b1e)

Issue #2724553 by snehi, Sonal.Sangale, er.pushpinderrana, jhodgdon, e.r.n.i.e: Chapter "Change file system storage settings" in INSTALL.txt needs to be adapted to Drupal 8

Issue #2663936 by milodesc: Include .gitattributes file in list of core files to move in INSTALL.txt instructions

Issue #2508231 by timmillwood, amateescu, hussainweb, catch, dawehner, David_Rothstein, Mixologic, effulgentsia: Raise minimum required version of PHP to 5.5.9

Issue #2473301 by stefan.r, jcnventura, David_Rothstein, yannickoo: Raise MySQL requirement to 5.5.3

Issue #2388255 by dawehner, hussainweb, pwolanin: Limit PDO MySQL to executing single statements if PHP supports it

Issue #2267551 followup by jfhovinne: [meta] Deal with PHP requirement vs. Debian PHP version numbering.

Issue #2267551 by jfhovinne, ParisLiakos, catch: PHP 5.4.5 needed to avoid zend failure when using autoloaded traits.

Issue #2251113 by alexpott, damiankloip, Crell, Wim Leers, dawehner, sun: Use container parameters instead of settings.

Issue #950534 by mparker17, mgifford, Mixologic, jbloomfield, erinclerico, theMusician, wmostrey | zirvap: [policy] Consistently use email instead of e-mail in Drupal.

Issue #2083733 by maartendeblock, JurgenR, Cyclodex, Pixelstyle, tankerjoe: Add reinstall instructions to INSTALL.txt

Issue #1861934 by Kristen Pol, pixelite, YesCT, Sutharsan, Outi: Rework help text for UI translations and importing po files.

Issue #203955 follow-up by Shawn DeArmond: Fix installation docs and field description to note that database now can be created at install time.

Issue #1392208 follow-up by Gábor Hojtsy, steinmb, Artusamak, penyaskito: Re-fixed Impossible to install Drupal in a non-English language when following the provided instructions. ;)

Nate Lampton authored Oct 30, 2011 and catch committed Nov 01, 2011

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

Nate Lampton authored Oct 30, 2011 and catch committed Nov 01, 2011

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

- Patch #1029346 by David_Rothstein: Changed INSTALL.txt and UPGRADE.txt should mention that you can download Drupal as a .zip file also.

#1003968 by David_Rothstein, jhodgdon: Fixed Explain in INSTALL.txt that on some servers, the automated settings.php creation isn't expected to work